SelectorExampleExample description elementpSelects all <p> elements #id#firstnameSelects the element with id="firstname" **Selects all elements .class.intro p.introSelects all elements with class="intro" Selects all <p> elements with class="intro" ...
css选择器非常之多,常见的如class选择器,id选择器,标签选择器等等。每个的用法都有所区别,虽然很多都能到达同样的效果,但还是有一些更优的选择。 class、id、标签选择器 这个几个就不细说了,class和标签选择器主要用来设置样式上面,id选择器推荐不要用在css样式上,更多是用在js操作dom时,选择元素。 如: 代码语...
The CSS class selector matches elements based on the contents of their class attribute. cssCopy to Clipboard /* All elements with class="spacious" */ .spacious { margin: 2em; } /* All <li> elements with class="spacious" */ li.spacious { margin: 2em; } /* All <li> elements with...
SelectorExampleExample descriptionCSS .class .intro Selects all elements with class="intro" 1 #id #firstname Selects the element with id="firstname" 1 * * Selects all elements 2 element p Selects all <p> elements 1 element,element div, p Selects all <div> elements and all <p> ...
element. */div:has(p){background-color:blue;}/* Select all <div> elements that contain a child element with the class "important". */div:has(.important){border:1px solid black;}/* Select all <div> elements that contain at least two child elements. */div:has(>*+*){padding:10px;...
类选择器(Class Selector) 通过HTML元素的 class 属性来选取元素。 当使用类选择器时,您可以通过为HTML元素添加class属性来选择并应用样式。让我们通过一个实际的例子来说明: 假设我们有以下HTML代码,表示一个产品列表,每个产品都有标题和描述: <div class="product"> ...
The CSS rule below will be applied to the HTML element with id="para1": #para1{ text-align:center; color:red; } Try it Yourself » Note:An id name cannot start with a number! The CSS class Selector The class selector selects HTML elements with a specific class attribute. ...
This library also allows you to create selector targeting multiple elements at once. You do that by calling the same function, but you provide an array of elements instead of single element: <body><!-- firstElement --><divclass="aaa bbb"></div><!-- secondElement --><spanclass="bbb...
W3C标准手册中的选择器如下表(共52个):SelectorExampleExample descriptionCSS.class.introSelects all elements with class="intro"1#id#firstnameSelects the elem
Pseudo-classes are allowed anywhere in selectors while pseudo-elements may only be appended after the last simple selector of the selector. 伪类可以出现在选择器的任何地方,但是伪元素只能出现在一个选择器的最后简单选择器的后面。 Pseudo-element and pseudo-class names are case-insensitive. 伪元素和伪...